package com.ruoyi.web.controller.common;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import javax.annotation.PostConstruct;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.ruoyi.common.base.AjaxResult;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.framework.util.FileUploadUtils;
import com.ruoyi.web.core.base.BaseController;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import com.ruoyi.common.config.Global;
import com.ruoyi.common.utils.file.FileUtils;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

/**
 * 通用请求处理
 * 
 * @author ruoyi
 */
@Controller
public class CommonController extends BaseController
{
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @RequestMapping("common/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
    {
        String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
        try
        {
            String filePath = Global.getDownloadPath() + fileName;

            response.setCharacterEncoding("utf-8");
            response.setContentType("multipart/form-data");
            response.setHeader("Content-Disposition", "attachment;fileName=" + setFileDownloadHeader(request, realFileName));
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete)
            {
                FileUtils.deleteFile(filePath);
            }
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    public String setFileDownloadHeader(HttpServletRequest request, String fileName) throws UnsupportedEncodingException
    {
        final String agent = request.getHeader("USER-AGENT");
        String filename = fileName;
        if (agent.contains("MSIE"))
        {
            // IE浏览器
            filename = URLEncoder.encode(filename, "utf-8");
            filename = filename.replace("+", " ");
        }
        else if (agent.contains("Firefox"))
        {
            // 火狐浏览器
            filename = new String(fileName.getBytes(), "ISO8859-1");
        }
        else if (agent.contains("Chrome"))
        {
            // google浏览器
            filename = URLEncoder.encode(filename, "utf-8");
        }
        else
        {
            // 其它浏览器
            filename = URLEncoder.encode(filename, "utf-8");
        }
        return filename;
    }
    @RequestMapping("common/img")
    public String goImpUp(String imgType, String imgName, String elem, ModelMap mmap){
        mmap.put("imgType", imgType);
        mmap.put("imgName", imgName);
        mmap.put("elem", elem);
        return "common/img/img";
    }

    @PostMapping("common/img")
    @ResponseBody
    public AjaxResult imgUp(String imgType, @RequestParam("img_file") MultipartFile file) {
        try {
            if (!file.isEmpty()) {
                String fileName = FileUploadUtils.upload(getPath(imgType), file);
                return AjaxResult.success().put("fileName", fileName);
            }
            return AjaxResult.error();
        } catch (Exception e) {
            return error(e.getMessage());
        }
    }
    private String getPath(String imgType) {
        String path = Global.getDownloadPath();
        if (StringUtils.isNotEmpty(imgType)){
            switch (imgType){
                case "avatar":
                    path = Global.getAvatarPath();
                    break;
                case "card":
                    path = Global.getCardPath();
                    break;
                default:
                    path = Global.getDownloadPath();
                    break;
            }
        }
        return path;
    }
}
